YMMV: Chibi Maruko-chan
- Ear Worm: Odoru Pompokolin by B.B. Queens, the series' first ending. Even if you're not familiar with it, you're probably familiar with the English Eurobeat cover by Captain Jack that appeared in many Dance Dance Revolution iterations. Likewise, Yume Ippai, the series' first opening, is a keter-class Earworm, as is it's second opening, Ureshii Yokan.